Nut-lock.



' PH BROWN.

NUT LOOK.

APPLIOATIONVEILEDIMAR. 23, 1909. 930, 1 48.

Patented Aug. 3, 1909.

UNITED STATESPATENT OFFICE.

FREDERICK J. BROWN, OF SORANTON, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOJOHN J. SCOTT, OF SORANTON, PENNSYLVANIA.

NUT-LOCK.

To all whom it may concern:

Be it known that I, FREDERICK J. BROWN, a citizen of the United States,residing at Scranton, in the county of Lackawanna and State ofPennsylvania, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledinthe art to which it appertains to make and use the same.

My invention relates to nut locks, and has for an object to provide animproved nut with a flanged base and means therein for locking the nutupon the nut seat.

A further object of the invention is to provide a nut with a projectingbase, to register in a cavity, for the purpose of relieving the shearingstrains on the bolt when the nut is struck by the flange of a car wheelor other moving objects.

\Vith these and other objects in view the invention comprises certainnovel constructions, combinations and arrangements of parts as will behereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 represents a side elevation of arail joint with my improved nut lock applied thereto. Fig. 2 representsa transverse section in elevation of the rail joint, taken through oneof the improved nut locks.

In the application of my improved nut look, I have shown it inconnection with the angle plate of a rail joint, but I Wish itunderstood that this form of nut lock may be used to equal advantage onother devices.

Referring to the drawings by numerals, 3 represents the ends of anordinary track rail on each side of which is secured an angle plate 4,which spans the joint where the two rails 3 come together. Through eachof the angle plates 4 is provided a bolt hole 5 concentric with aconcavity 6 constructed for the purpose of receiving the convex orspherical portion 7 of the nut 8. The bolt 9 is passed through the angleplates 4 and through the rail section 3, and on the end of the bolt isscrewed the lock nut 8, until the convex or spherical portion 7 hasentirely contacted with the Wall of the concavity 6. The nut 8 is alsoprovided with a flanged portion 10, through which a series of holes 12are located equi-distant from the center of the nut 8. Through theflanged plates 4 a hole 13 is pro- Specification of Letters Patent.

Application filed March 23, 1909.

Patented Aug. 3, 1909.

Serial No. 485,199.

vided for the purpose of receiving the base end of a tapering pin 14,after the pin has been inserted into one of the holes 12 in the flange10 of the nut 8.

In applying my improved nut lock, the bolt 9 is passed through the angleplates 4 and the rail section 3, and the nut 8 is then turned upon thethreaded portion of the bolt 9 until the convex portion 7 becomesfrictionally engaged with the wall of the concavity 6, and the flangeportion 10 engages the material of the angle plate 4 surrounding theconcavity 6. The nut 8 is then adjusted until one of the holes 12 in theflange 10 has registered with the hole 13 in the angle plate 4. thenthis is done the tapering pin 14 is inserted in one of the holes 12 ofthe flan e 10, and through the flange 10 into the ho e 13, the base ofthe pin being entered first, which portion becomes seated on the web ofthe rail section 3. In this position the small end of the pin 14projects into the hole 12 in the nut flange 10, but does not fill thesame. The nut is then partly unscrewed until the hole 13 in the angleplate 4 no longer registers with the hole 12 in the nut flange 10. Withthe nut in this position the material of the flange 10 surrounding thehole 12 engages the outer and smaller portion of the pin 14, andprevents the pin from being withdrawn. At this juncture, the pin outlet,through the nut flange, is reduced to a less diameter than that portionof the pin that projects into the hole 13. The nut is thus preventedfrom unscrewing, as the pin 14 acts as a stop for the same. Before thepin can be removed, the nut 8 will have to be tightened until the hole12 in the flange 10 registers with the hole 13 in the flanged section 4.It will therefore be seen that the nut is securely locked, and thatthere is no possible way of its becoming loosened, when once screwedinto position, until it has been tightened sufliciently to make theholes 12 and 13 register, at which position the pin 14 can be removedand the nut unscrewed in the usual way.

The purpose of the concavity 6 is to allow the convex or sphericalportion 7 of the nut 8 to project therein, for the purpose of relievinga part of the shearing strains that may come upon the bolt 9 from timeto time.

hat I claim is:

1. In a nut lock, the combination of a bolt, a flanged nut havingapertures formed therethrough, a friction plate having an apertureformed therein, one of the first-mentioned a ertures registering Withthe second mentioned aperture, a tapering pin positioned within the saidapertures, a projection upon said flanged nut, a Cavity formed withinsaid l'riction plate, the-said cavity receivingthe said projection uponsaid nut.

2. In a nut lock, the combination of a bolt, a friction plate formedwith an aperture therein, a flanged nut formed With aperturestherethrough, the first mentioned aperture registering With one of thesecond mentioned apertures, a tapering pin having its larger endinserted into the first-mentioned aperture and its smaller end looselyprojecting into the second mentioned aperture, and the said flanged nutadapted to be slightly unscrewed to engage the outer portion of the saidpin and to lock the said pin against out- Ward movement.

In testimony whereof I aflix my signature 0 in presence of tWoWitnesses.

FREDERICK J. BROWN.

Witnesses:

W. W. BAYLOR, lVIQRTIMER MACVITTER.

